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andy5995/gist:89a53cde95a50b93ffce3cd1f57fc357

Created February 4, 2023 05:38
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Check for supported compiler flags in a Makefile
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gistfile1.txt
Minor adaptation of example at https://stackoverflow.com/a/61634784/6838037
CHECK_CC_FLAGS := -Wall -Wextra -I. --std=gnu89 -fPIC -flto=auto
define check_cc_flag
$(shell echo 'int main() { return 0; }' | $(CC) $(1) -xc - 2>/dev/null && echo $(1))
endef
HAVE_FLAGS += $(foreach flag,$(CHECK_CC_FLAGS),$(call check_cc_flag,$(flag)))
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